./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:30:04,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:30:04,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:30:04,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:30:04,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:30:04,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:30:04,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:30:04,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:30:04,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:30:04,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:30:04,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:30:04,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:30:04,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:30:04,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:30:04,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:30:04,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:30:04,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:30:04,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:30:04,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:30:04,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:30:04,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:30:04,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:30:04,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:30:04,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:30:04,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:30:04,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:30:04,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:30:04,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:30:04,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:30:04,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:30:04,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:30:04,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:30:04,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:30:04,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:30:04,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:30:04,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:30:04,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:30:04,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:30:04,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:30:04,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:30:04,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:30:04,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 22:30:04,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:30:04,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:30:04,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:30:04,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:30:04,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:30:04,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:30:04,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:30:04,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:30:04,577 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:30:04,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:30:04,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:30:04,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:30:04,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:30:04,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:30:04,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:30:04,578 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:30:04,578 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:30:04,578 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:30:04,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:30:04,578 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:30:04,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:30:04,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:30:04,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:30:04,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:30:04,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:30:04,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:30:04,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:30:04,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:30:04,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:30:04,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:30:04,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:30:04,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba [2021-12-06 22:30:04,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:30:04,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:30:04,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:30:04,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:30:04,779 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:30:04,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2021-12-06 22:30:04,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/858e07710/f4c4a20c2d9944eeb20a048a02300353/FLAGada44e1d8 [2021-12-06 22:30:05,235 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:30:05,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2021-12-06 22:30:05,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/858e07710/f4c4a20c2d9944eeb20a048a02300353/FLAGada44e1d8 [2021-12-06 22:30:05,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/858e07710/f4c4a20c2d9944eeb20a048a02300353 [2021-12-06 22:30:05,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:30:05,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:30:05,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:30:05,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:30:05,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:30:05,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf0be37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05, skipping insertion in model container [2021-12-06 22:30:05,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:30:05,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:30:05,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2021-12-06 22:30:05,495 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2021-12-06 22:30:05,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2021-12-06 22:30:05,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:30:05,508 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:30:05,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2021-12-06 22:30:05,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2021-12-06 22:30:05,536 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2021-12-06 22:30:05,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:30:05,559 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:30:05,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05 WrapperNode [2021-12-06 22:30:05,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:30:05,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:30:05,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:30:05,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:30:05,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,603 INFO L137 Inliner]: procedures = 119, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 139 [2021-12-06 22:30:05,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:30:05,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:30:05,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:30:05,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:30:05,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:30:05,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:30:05,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:30:05,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:30:05,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (1/1) ... [2021-12-06 22:30:05,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:30:05,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:05,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:30:05,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:30:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:30:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:30:05,750 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:30:05,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:30:05,980 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:30:05,986 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:30:05,986 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-06 22:30:05,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:30:05 BoogieIcfgContainer [2021-12-06 22:30:05,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:30:05,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:30:05,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:30:05,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:30:05,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:30:05" (1/3) ... [2021-12-06 22:30:05,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3de63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:30:05, skipping insertion in model container [2021-12-06 22:30:05,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:30:05" (2/3) ... [2021-12-06 22:30:05,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3de63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:30:05, skipping insertion in model container [2021-12-06 22:30:05,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:30:05" (3/3) ... [2021-12-06 22:30:05,993 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2021-12-06 22:30:05,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:30:05,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2021-12-06 22:30:06,030 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:30:06,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:30:06,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2021-12-06 22:30:06,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 128 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 22:30:06,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:06,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 22:30:06,054 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-06 22:30:06,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:06,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191789841] [2021-12-06 22:30:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:06,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:06,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191789841] [2021-12-06 22:30:06,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191789841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:06,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:06,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:30:06,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933040593] [2021-12-06 22:30:06,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:30:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:30:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:30:06,208 INFO L87 Difference]: Start difference. First operand has 129 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 128 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:06,307 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2021-12-06 22:30:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:30:06,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-06 22:30:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:06,316 INFO L225 Difference]: With dead ends: 127 [2021-12-06 22:30:06,316 INFO L226 Difference]: Without dead ends: 125 [2021-12-06 22:30:06,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:30:06,320 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 81 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:06,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 121 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-06 22:30:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-12-06 22:30:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 70 states have (on average 1.9) internal successors, (133), 124 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-12-06 22:30:06,349 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 3 [2021-12-06 22:30:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:06,350 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-12-06 22:30:06,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-12-06 22:30:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 22:30:06,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:06,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 22:30:06,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:30:06,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-06 22:30:06,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:06,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178532809] [2021-12-06 22:30:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:06,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:06,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:06,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178532809] [2021-12-06 22:30:06,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178532809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:06,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:06,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:30:06,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766396750] [2021-12-06 22:30:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:06,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:30:06,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:30:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:30:06,388 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:06,457 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2021-12-06 22:30:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:30:06,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-06 22:30:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:06,459 INFO L225 Difference]: With dead ends: 123 [2021-12-06 22:30:06,459 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 22:30:06,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:30:06,461 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 79 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:06,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 117 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 22:30:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-06 22:30:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 70 states have (on average 1.8714285714285714) internal successors, (131), 122 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2021-12-06 22:30:06,473 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 3 [2021-12-06 22:30:06,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:06,474 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2021-12-06 22:30:06,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2021-12-06 22:30:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 22:30:06,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:06,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:06,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:30:06,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash 59263661, now seen corresponding path program 1 times [2021-12-06 22:30:06,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:06,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706380376] [2021-12-06 22:30:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:06,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:06,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:06,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706380376] [2021-12-06 22:30:06,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706380376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:06,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:06,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:30:06,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642530060] [2021-12-06 22:30:06,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:06,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:30:06,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:06,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:30:06,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:30:06,544 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:06,638 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-12-06 22:30:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:30:06,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 22:30:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:06,640 INFO L225 Difference]: With dead ends: 117 [2021-12-06 22:30:06,640 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 22:30:06,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:30:06,641 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 140 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:06,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 86 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 22:30:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-12-06 22:30:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 74 states have (on average 1.6891891891891893) internal successors, (125), 112 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2021-12-06 22:30:06,648 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 8 [2021-12-06 22:30:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:06,648 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2021-12-06 22:30:06,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2021-12-06 22:30:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 22:30:06,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:06,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:06,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:30:06,649 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash 59263662, now seen corresponding path program 1 times [2021-12-06 22:30:06,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:06,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49431628] [2021-12-06 22:30:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:06,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:06,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:06,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49431628] [2021-12-06 22:30:06,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49431628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:06,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:06,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:30:06,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190649914] [2021-12-06 22:30:06,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:06,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:30:06,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:30:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:30:06,701 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:06,816 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2021-12-06 22:30:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:30:06,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 22:30:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:06,817 INFO L225 Difference]: With dead ends: 150 [2021-12-06 22:30:06,818 INFO L226 Difference]: Without dead ends: 150 [2021-12-06 22:30:06,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:30:06,819 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 140 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:06,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 129 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-06 22:30:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 135. [2021-12-06 22:30:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 96 states have (on average 1.5729166666666667) internal successors, (151), 134 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2021-12-06 22:30:06,826 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 8 [2021-12-06 22:30:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:06,826 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2021-12-06 22:30:06,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2021-12-06 22:30:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:30:06,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:06,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:06,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:30:06,827 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2021-12-06 22:30:06,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:06,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432307669] [2021-12-06 22:30:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:06,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:06,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:06,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432307669] [2021-12-06 22:30:06,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432307669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:06,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:06,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:30:06,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896769014] [2021-12-06 22:30:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:06,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:30:06,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:30:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:30:06,883 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:07,013 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-12-06 22:30:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:30:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:30:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:07,014 INFO L225 Difference]: With dead ends: 136 [2021-12-06 22:30:07,014 INFO L226 Difference]: Without dead ends: 136 [2021-12-06 22:30:07,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:30:07,015 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 71 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:07,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 230 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-06 22:30:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2021-12-06 22:30:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 96 states have (on average 1.5625) internal successors, (150), 133 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2021-12-06 22:30:07,022 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 12 [2021-12-06 22:30:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:07,022 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2021-12-06 22:30:07,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2021-12-06 22:30:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:30:07,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:07,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:07,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:30:07,023 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2021-12-06 22:30:07,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:07,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065503451] [2021-12-06 22:30:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:07,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:07,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065503451] [2021-12-06 22:30:07,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065503451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:07,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:07,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:30:07,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854708367] [2021-12-06 22:30:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:07,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:30:07,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:30:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:30:07,101 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:07,265 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2021-12-06 22:30:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:30:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 22:30:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:07,266 INFO L225 Difference]: With dead ends: 132 [2021-12-06 22:30:07,266 INFO L226 Difference]: Without dead ends: 132 [2021-12-06 22:30:07,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:30:07,267 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 9 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:07,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 316 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-06 22:30:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2021-12-06 22:30:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 91 states have (on average 1.5384615384615385) internal successors, (140), 124 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2021-12-06 22:30:07,273 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 12 [2021-12-06 22:30:07,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:07,273 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2021-12-06 22:30:07,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2021-12-06 22:30:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 22:30:07,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:07,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:07,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:30:07,275 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1394377289, now seen corresponding path program 1 times [2021-12-06 22:30:07,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:07,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142501725] [2021-12-06 22:30:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:07,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:07,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:07,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142501725] [2021-12-06 22:30:07,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142501725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:07,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:07,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:30:07,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226882741] [2021-12-06 22:30:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:07,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:30:07,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:30:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:30:07,307 INFO L87 Difference]: Start difference. First operand 125 states and 140 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:07,366 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-12-06 22:30:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:30:07,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 22:30:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:07,368 INFO L225 Difference]: With dead ends: 140 [2021-12-06 22:30:07,368 INFO L226 Difference]: Without dead ends: 140 [2021-12-06 22:30:07,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:30:07,369 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:07,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 174 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:07,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-06 22:30:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2021-12-06 22:30:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 91 states have (on average 1.5054945054945055) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2021-12-06 22:30:07,373 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 14 [2021-12-06 22:30:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:07,374 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2021-12-06 22:30:07,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2021-12-06 22:30:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:30:07,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:07,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:07,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:30:07,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:07,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:07,375 INFO L85 PathProgramCache]: Analyzing trace with hash -991514342, now seen corresponding path program 1 times [2021-12-06 22:30:07,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:07,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052065428] [2021-12-06 22:30:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:07,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:07,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:07,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052065428] [2021-12-06 22:30:07,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052065428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:07,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:07,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:30:07,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825467902] [2021-12-06 22:30:07,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:07,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:30:07,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:30:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:30:07,429 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:07,538 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2021-12-06 22:30:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:30:07,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 22:30:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:07,539 INFO L225 Difference]: With dead ends: 146 [2021-12-06 22:30:07,540 INFO L226 Difference]: Without dead ends: 146 [2021-12-06 22:30:07,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:30:07,541 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 27 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:07,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 399 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-06 22:30:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2021-12-06 22:30:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.4747474747474747) internal successors, (146), 132 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2021-12-06 22:30:07,547 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 17 [2021-12-06 22:30:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:07,547 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2021-12-06 22:30:07,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2021-12-06 22:30:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:30:07,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:07,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:07,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:30:07,549 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1632793422, now seen corresponding path program 1 times [2021-12-06 22:30:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:07,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360723839] [2021-12-06 22:30:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:07,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:07,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:07,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360723839] [2021-12-06 22:30:07,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360723839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:07,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:07,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:30:07,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572540425] [2021-12-06 22:30:07,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:07,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:30:07,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:30:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:30:07,604 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:07,723 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2021-12-06 22:30:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:30:07,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 22:30:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:07,724 INFO L225 Difference]: With dead ends: 152 [2021-12-06 22:30:07,724 INFO L226 Difference]: Without dead ends: 152 [2021-12-06 22:30:07,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:30:07,725 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 25 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:07,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 287 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-06 22:30:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2021-12-06 22:30:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 142 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2021-12-06 22:30:07,728 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 19 [2021-12-06 22:30:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:07,729 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2021-12-06 22:30:07,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2021-12-06 22:30:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 22:30:07,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:07,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:07,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:30:07,730 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1777521809, now seen corresponding path program 1 times [2021-12-06 22:30:07,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:07,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305317316] [2021-12-06 22:30:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:07,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:07,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:07,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305317316] [2021-12-06 22:30:07,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305317316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:07,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:07,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:30:07,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69849472] [2021-12-06 22:30:07,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:07,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:30:07,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:30:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:30:07,772 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:07,881 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-12-06 22:30:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:30:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 22:30:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:07,882 INFO L225 Difference]: With dead ends: 144 [2021-12-06 22:30:07,882 INFO L226 Difference]: Without dead ends: 144 [2021-12-06 22:30:07,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:30:07,883 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 68 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:07,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 227 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:07,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-06 22:30:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2021-12-06 22:30:07,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 141 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-12-06 22:30:07,887 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 22 [2021-12-06 22:30:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:07,888 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-12-06 22:30:07,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-12-06 22:30:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 22:30:07,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:07,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:07,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:30:07,889 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:07,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:07,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1777521810, now seen corresponding path program 1 times [2021-12-06 22:30:07,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:07,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139143182] [2021-12-06 22:30:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:07,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:07,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:07,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139143182] [2021-12-06 22:30:07,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139143182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:07,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:30:07,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:30:07,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131580825] [2021-12-06 22:30:07,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:07,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:30:07,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:07,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:30:07,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:30:07,952 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:08,082 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-12-06 22:30:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:30:08,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 22:30:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:08,083 INFO L225 Difference]: With dead ends: 141 [2021-12-06 22:30:08,083 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 22:30:08,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:30:08,084 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 6 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:08,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 296 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 22:30:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-12-06 22:30:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 109 states have (on average 1.4311926605504588) internal successors, (156), 139 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2021-12-06 22:30:08,087 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 22 [2021-12-06 22:30:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:08,087 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2021-12-06 22:30:08,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2021-12-06 22:30:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:30:08,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:08,088 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:08,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:30:08,089 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:08,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1310880280, now seen corresponding path program 1 times [2021-12-06 22:30:08,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:08,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032735837] [2021-12-06 22:30:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:08,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:08,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:08,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032735837] [2021-12-06 22:30:08,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032735837] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:08,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163625044] [2021-12-06 22:30:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:08,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:08,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:08,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:08,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:30:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:08,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 22:30:08,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:08,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:08,404 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 22:30:08,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 22:30:08,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:08,542 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:08,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:30:08,565 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:08,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 22:30:08,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:08,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:30:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:08,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:08,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:08,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-06 22:30:09,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:09,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-06 22:30:09,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-06 22:30:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:09,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163625044] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:09,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:09,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2021-12-06 22:30:09,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936748724] [2021-12-06 22:30:09,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:09,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 22:30:09,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 22:30:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=786, Unknown=8, NotChecked=0, Total=930 [2021-12-06 22:30:09,817 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:10,312 INFO L93 Difference]: Finished difference Result 210 states and 235 transitions. [2021-12-06 22:30:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:30:10,312 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 22:30:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:10,314 INFO L225 Difference]: With dead ends: 210 [2021-12-06 22:30:10,314 INFO L226 Difference]: Without dead ends: 210 [2021-12-06 22:30:10,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=274, Invalid=1200, Unknown=8, NotChecked=0, Total=1482 [2021-12-06 22:30:10,315 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 574 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 820 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:10,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 718 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 594 Invalid, 0 Unknown, 820 Unchecked, 0.3s Time] [2021-12-06 22:30:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-06 22:30:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 158. [2021-12-06 22:30:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 127 states have (on average 1.4015748031496063) internal successors, (178), 157 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2021-12-06 22:30:10,321 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 25 [2021-12-06 22:30:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:10,321 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2021-12-06 22:30:10,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2021-12-06 22:30:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:30:10,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:10,323 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:10,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:30:10,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:10,524 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1310880279, now seen corresponding path program 1 times [2021-12-06 22:30:10,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:10,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912096519] [2021-12-06 22:30:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:10,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:10,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:10,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912096519] [2021-12-06 22:30:10,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912096519] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:10,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207409749] [2021-12-06 22:30:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:10,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:10,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:10,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:10,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:30:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:10,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 22:30:10,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:10,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:10,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:10,770 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:30:10,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:30:10,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:10,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:10,898 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:30:10,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:30:10,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:30:10,912 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:10,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:30:10,940 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:10,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-06 22:30:10,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 22:30:11,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:11,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:30:11,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:11,053 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:11,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2021-12-06 22:30:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:11,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:11,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:11,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2021-12-06 22:30:11,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:11,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2021-12-06 22:30:11,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:11,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 75 [2021-12-06 22:30:11,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:11,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 116 [2021-12-06 22:30:11,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2021-12-06 22:30:11,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-12-06 22:30:11,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2021-12-06 22:30:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:12,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207409749] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:12,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:12,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2021-12-06 22:30:12,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633567222] [2021-12-06 22:30:12,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:12,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 22:30:12,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 22:30:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1005, Unknown=9, NotChecked=0, Total=1122 [2021-12-06 22:30:12,013 INFO L87 Difference]: Start difference. First operand 158 states and 178 transitions. Second operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:13,119 INFO L93 Difference]: Finished difference Result 286 states and 315 transitions. [2021-12-06 22:30:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 22:30:13,119 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 22:30:13,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:13,121 INFO L225 Difference]: With dead ends: 286 [2021-12-06 22:30:13,121 INFO L226 Difference]: Without dead ends: 286 [2021-12-06 22:30:13,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=438, Invalid=2415, Unknown=9, NotChecked=0, Total=2862 [2021-12-06 22:30:13,123 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 692 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 689 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:13,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 1177 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1544 Invalid, 0 Unknown, 689 Unchecked, 0.6s Time] [2021-12-06 22:30:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-06 22:30:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 158. [2021-12-06 22:30:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 157 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2021-12-06 22:30:13,128 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 25 [2021-12-06 22:30:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:13,128 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2021-12-06 22:30:13,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2021-12-06 22:30:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:30:13,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:13,129 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:13,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:30:13,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:30:13,330 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 14127102, now seen corresponding path program 1 times [2021-12-06 22:30:13,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:13,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721111693] [2021-12-06 22:30:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:13,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:13,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721111693] [2021-12-06 22:30:13,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721111693] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563808375] [2021-12-06 22:30:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:13,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:13,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:13,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:13,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:30:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:13,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 22:30:13,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:13,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:13,546 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 22:30:13,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 22:30:13,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:13,637 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:13,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:30:13,655 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:13,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 22:30:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:13,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-06 22:30:13,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:13,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:30:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:13,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:14,065 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:14,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-06 22:30:14,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:14,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-06 22:30:14,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-06 22:30:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:14,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563808375] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:14,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:14,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2021-12-06 22:30:14,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449577907] [2021-12-06 22:30:14,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:14,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:30:14,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:30:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=685, Unknown=6, NotChecked=0, Total=812 [2021-12-06 22:30:14,697 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:15,104 INFO L93 Difference]: Finished difference Result 224 states and 255 transitions. [2021-12-06 22:30:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:30:15,105 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 22:30:15,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:15,106 INFO L225 Difference]: With dead ends: 224 [2021-12-06 22:30:15,106 INFO L226 Difference]: Without dead ends: 224 [2021-12-06 22:30:15,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=972, Unknown=6, NotChecked=0, Total=1190 [2021-12-06 22:30:15,107 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 330 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 654 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:15,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 919 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 880 Invalid, 0 Unknown, 654 Unchecked, 0.3s Time] [2021-12-06 22:30:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-06 22:30:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 165. [2021-12-06 22:30:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 139 states have (on average 1.381294964028777) internal successors, (192), 164 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2021-12-06 22:30:15,110 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 27 [2021-12-06 22:30:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:15,111 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2021-12-06 22:30:15,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2021-12-06 22:30:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:30:15,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:15,111 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:15,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 22:30:15,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:30:15,312 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:15,314 INFO L85 PathProgramCache]: Analyzing trace with hash 14127103, now seen corresponding path program 1 times [2021-12-06 22:30:15,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:15,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505991718] [2021-12-06 22:30:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:15,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:15,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:15,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505991718] [2021-12-06 22:30:15,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505991718] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:15,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858395729] [2021-12-06 22:30:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:15,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:15,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:15,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:30:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:15,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 22:30:15,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:15,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:15,568 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:30:15,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:30:15,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:15,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:15,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:15,677 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:30:15,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:30:15,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:30:15,688 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:15,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:30:15,717 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:15,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-06 22:30:15,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 22:30:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:15,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-06 22:30:15,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:15,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:30:15,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:15,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:30:15,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:15,857 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:15,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2021-12-06 22:30:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:15,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:16,332 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:16,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-12-06 22:30:16,336 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:16,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 51 [2021-12-06 22:30:16,342 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:16,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 77 [2021-12-06 22:30:16,349 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:16,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 120 [2021-12-06 22:30:16,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 85 [2021-12-06 22:30:16,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2021-12-06 22:30:16,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 79 [2021-12-06 22:30:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:16,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858395729] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:16,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:16,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2021-12-06 22:30:16,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506375361] [2021-12-06 22:30:16,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:16,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 22:30:16,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:16,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 22:30:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=820, Unknown=11, NotChecked=0, Total=930 [2021-12-06 22:30:16,667 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:17,378 INFO L93 Difference]: Finished difference Result 229 states and 260 transitions. [2021-12-06 22:30:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:30:17,378 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 22:30:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:17,380 INFO L225 Difference]: With dead ends: 229 [2021-12-06 22:30:17,380 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 22:30:17,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1376, Unknown=11, NotChecked=0, Total=1640 [2021-12-06 22:30:17,381 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 261 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:17,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 985 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1291 Invalid, 0 Unknown, 474 Unchecked, 0.5s Time] [2021-12-06 22:30:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 22:30:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 165. [2021-12-06 22:30:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 139 states have (on average 1.3741007194244603) internal successors, (191), 164 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2021-12-06 22:30:17,384 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 27 [2021-12-06 22:30:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:17,384 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2021-12-06 22:30:17,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2021-12-06 22:30:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 22:30:17,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:17,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:17,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:30:17,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 22:30:17,587 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash 408081261, now seen corresponding path program 1 times [2021-12-06 22:30:17,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:17,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018552605] [2021-12-06 22:30:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:17,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:17,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:17,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018552605] [2021-12-06 22:30:17,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018552605] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:17,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259133485] [2021-12-06 22:30:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:17,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:17,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:17,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:17,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:30:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:17,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:30:17,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:17,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 22:30:17,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-06 22:30:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:30:17,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:30:18,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259133485] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:18,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:18,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 24 [2021-12-06 22:30:18,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70691936] [2021-12-06 22:30:18,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:18,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 22:30:18,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:18,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 22:30:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:30:18,021 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:19,523 INFO L93 Difference]: Finished difference Result 237 states and 259 transitions. [2021-12-06 22:30:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-06 22:30:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 22:30:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:19,525 INFO L225 Difference]: With dead ends: 237 [2021-12-06 22:30:19,525 INFO L226 Difference]: Without dead ends: 237 [2021-12-06 22:30:19,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=912, Invalid=5568, Unknown=0, NotChecked=0, Total=6480 [2021-12-06 22:30:19,527 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 619 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:19,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 867 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:30:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-06 22:30:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 153. [2021-12-06 22:30:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 129 states have (on average 1.3488372093023255) internal successors, (174), 152 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2021-12-06 22:30:19,531 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 30 [2021-12-06 22:30:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:19,531 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2021-12-06 22:30:19,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2021-12-06 22:30:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 22:30:19,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:19,532 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:19,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:30:19,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 22:30:19,733 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2056569881, now seen corresponding path program 1 times [2021-12-06 22:30:19,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:19,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768719503] [2021-12-06 22:30:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:19,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:19,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768719503] [2021-12-06 22:30:19,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768719503] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794952787] [2021-12-06 22:30:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:19,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:19,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:19,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:19,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:30:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:19,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 22:30:19,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:20,061 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:30:20,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:30:20,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:20,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:20,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:20,223 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:20,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:30:20,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:20,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 22:30:20,249 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:20,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-06 22:30:20,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 22:30:20,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:20,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:30:20,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:20,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:30:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:20,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:20,899 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:20,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2021-12-06 22:30:20,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:20,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2021-12-06 22:30:20,911 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:20,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 75 [2021-12-06 22:30:20,919 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:20,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 116 [2021-12-06 22:30:20,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2021-12-06 22:30:20,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-12-06 22:30:20,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2021-12-06 22:30:21,369 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:30:21,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 22:30:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:21,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794952787] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:21,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:21,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2021-12-06 22:30:21,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595574928] [2021-12-06 22:30:21,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:21,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 22:30:21,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:21,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 22:30:21,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1121, Unknown=21, NotChecked=0, Total=1260 [2021-12-06 22:30:21,434 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:22,395 INFO L93 Difference]: Finished difference Result 278 states and 307 transitions. [2021-12-06 22:30:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:30:22,396 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 22:30:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:22,397 INFO L225 Difference]: With dead ends: 278 [2021-12-06 22:30:22,397 INFO L226 Difference]: Without dead ends: 278 [2021-12-06 22:30:22,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=318, Invalid=2211, Unknown=21, NotChecked=0, Total=2550 [2021-12-06 22:30:22,398 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 401 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 774 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:22,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1219 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1492 Invalid, 0 Unknown, 774 Unchecked, 0.6s Time] [2021-12-06 22:30:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-06 22:30:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 182. [2021-12-06 22:30:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 158 states have (on average 1.3164556962025316) internal successors, (208), 181 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2021-12-06 22:30:22,402 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 31 [2021-12-06 22:30:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:22,402 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2021-12-06 22:30:22,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2021-12-06 22:30:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 22:30:22,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:22,403 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:22,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:30:22,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:22,605 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2056569880, now seen corresponding path program 1 times [2021-12-06 22:30:22,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:22,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341761730] [2021-12-06 22:30:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:22,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:22,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:22,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341761730] [2021-12-06 22:30:22,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341761730] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:22,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639030303] [2021-12-06 22:30:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:22,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:22,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:22,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:22,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:30:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:22,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 22:30:22,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:22,883 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 22:30:22,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 22:30:22,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:23,017 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:23,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:30:23,037 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:23,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 22:30:23,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:23,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:30:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:23,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:23,366 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:23,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-06 22:30:23,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:23,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-06 22:30:23,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-06 22:30:24,752 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-12-06 22:30:24,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 67 [2021-12-06 22:30:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:24,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639030303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:24,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:24,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2021-12-06 22:30:24,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156066750] [2021-12-06 22:30:24,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:24,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 22:30:24,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 22:30:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=916, Unknown=6, NotChecked=0, Total=1056 [2021-12-06 22:30:24,878 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:25,272 INFO L93 Difference]: Finished difference Result 221 states and 248 transitions. [2021-12-06 22:30:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:30:25,272 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 22:30:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:25,273 INFO L225 Difference]: With dead ends: 221 [2021-12-06 22:30:25,273 INFO L226 Difference]: Without dead ends: 221 [2021-12-06 22:30:25,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=1312, Unknown=6, NotChecked=0, Total=1560 [2021-12-06 22:30:25,274 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 213 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:25,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 821 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 758 Invalid, 0 Unknown, 671 Unchecked, 0.3s Time] [2021-12-06 22:30:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-06 22:30:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 181. [2021-12-06 22:30:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 157 states have (on average 1.3121019108280254) internal successors, (206), 180 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:25,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 206 transitions. [2021-12-06 22:30:25,277 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 206 transitions. Word has length 31 [2021-12-06 22:30:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:25,278 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 206 transitions. [2021-12-06 22:30:25,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:25,278 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 206 transitions. [2021-12-06 22:30:25,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:30:25,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:25,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:25,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:30:25,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:30:25,480 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash 678653734, now seen corresponding path program 1 times [2021-12-06 22:30:25,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:25,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274653642] [2021-12-06 22:30:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:25,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:25,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:25,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274653642] [2021-12-06 22:30:25,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274653642] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:25,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669459586] [2021-12-06 22:30:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:25,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:25,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:25,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:25,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:30:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:25,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 22:30:25,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:25,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:25,653 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:30:25,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2021-12-06 22:30:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:25,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669459586] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:25,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:25,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2021-12-06 22:30:25,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823667292] [2021-12-06 22:30:25,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:25,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:30:25,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:30:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:30:25,668 INFO L87 Difference]: Start difference. First operand 181 states and 206 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:25,780 INFO L93 Difference]: Finished difference Result 238 states and 268 transitions. [2021-12-06 22:30:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:30:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 22:30:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:25,781 INFO L225 Difference]: With dead ends: 238 [2021-12-06 22:30:25,781 INFO L226 Difference]: Without dead ends: 238 [2021-12-06 22:30:25,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:30:25,781 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 377 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:25,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 105 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-06 22:30:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 184. [2021-12-06 22:30:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 183 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 213 transitions. [2021-12-06 22:30:25,786 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 213 transitions. Word has length 33 [2021-12-06 22:30:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:25,786 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 213 transitions. [2021-12-06 22:30:25,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 213 transitions. [2021-12-06 22:30:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:30:25,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:25,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:25,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:30:25,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:25,988 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash 678653735, now seen corresponding path program 1 times [2021-12-06 22:30:25,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:25,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843781667] [2021-12-06 22:30:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:25,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:26,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:26,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843781667] [2021-12-06 22:30:26,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843781667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:26,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718935689] [2021-12-06 22:30:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:26,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:26,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:26,087 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:26,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:30:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:26,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 22:30:26,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:26,240 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:30:26,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:30:26,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:26,333 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:26,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2021-12-06 22:30:26,348 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:30:26,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-12-06 22:30:26,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:26,403 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:26,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2021-12-06 22:30:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:26,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:26,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_108| Int) (v_ArrVal_972 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|) 0)) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) is different from false [2021-12-06 22:30:26,499 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_108| Int) (v_ArrVal_972 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|) 0)) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) is different from false [2021-12-06 22:30:26,509 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_108| Int) (v_ArrVal_972 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|) 0)) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) is different from false [2021-12-06 22:30:26,523 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:26,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-12-06 22:30:26,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:26,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2021-12-06 22:30:26,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 22:30:26,878 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:30:26,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 22:30:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:26,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718935689] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:26,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:26,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 29 [2021-12-06 22:30:26,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830427466] [2021-12-06 22:30:26,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:26,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:30:26,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:30:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=563, Unknown=3, NotChecked=150, Total=812 [2021-12-06 22:30:26,929 INFO L87 Difference]: Start difference. First operand 184 states and 213 transitions. Second operand has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:27,752 INFO L93 Difference]: Finished difference Result 327 states and 369 transitions. [2021-12-06 22:30:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 22:30:27,753 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 22:30:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:27,754 INFO L225 Difference]: With dead ends: 327 [2021-12-06 22:30:27,754 INFO L226 Difference]: Without dead ends: 327 [2021-12-06 22:30:27,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=346, Invalid=1825, Unknown=3, NotChecked=276, Total=2450 [2021-12-06 22:30:27,755 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 616 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 784 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:27,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1079 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1220 Invalid, 0 Unknown, 784 Unchecked, 0.4s Time] [2021-12-06 22:30:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-06 22:30:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 227. [2021-12-06 22:30:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 204 states have (on average 1.3676470588235294) internal successors, (279), 226 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 279 transitions. [2021-12-06 22:30:27,760 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 279 transitions. Word has length 33 [2021-12-06 22:30:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:27,760 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 279 transitions. [2021-12-06 22:30:27,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:30:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 279 transitions. [2021-12-06 22:30:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:30:27,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:27,760 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:27,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:30:27,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:27,961 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:30:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1865212554, now seen corresponding path program 2 times [2021-12-06 22:30:27,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:27,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370167709] [2021-12-06 22:30:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:27,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:28,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:28,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370167709] [2021-12-06 22:30:28,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370167709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:28,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202558840] [2021-12-06 22:30:28,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:30:28,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:28,115 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:28,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:30:28,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:30:28,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:30:28,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 22:30:28,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:28,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:28,247 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:30:28,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:30:28,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:28,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:30:28,357 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 22:30:28,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-06 22:30:28,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-12-06 22:30:28,400 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:30:28,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2021-12-06 22:30:28,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-06 22:30:28,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:28,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:28,659 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-12-06 22:30:28,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 38 [2021-12-06 22:30:28,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:28,665 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:30:28,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:30:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:28,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:35,301 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:35,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 56956 treesize of output 51393 [2021-12-06 22:30:37,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:37,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:39,181 INFO L354 Elim1Store]: treesize reduction 624, result has 48.3 percent of original size [2021-12-06 22:30:39,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 15 new quantified variables, introduced 92 case distinctions, treesize of input 530426 treesize of output 499139 [2021-12-06 22:31:18,227 WARN L227 SmtUtils]: Spent 39.04s on a formula simplification. DAG size of input: 1665 DAG size of output: 1639 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 22:31:18,400 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:18,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 410971 treesize of output 410807 [2021-12-06 22:31:23,420 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 22:31:23,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:31:23,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-06 22:31:23,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415086764] [2021-12-06 22:31:23,421 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 22:31:23,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:31:23,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:31:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=955, Unknown=3, NotChecked=0, Total=1056 [2021-12-06 22:31:23,422 INFO L87 Difference]: Start difference. First operand 227 states and 279 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:24,072 INFO L93 Difference]: Finished difference Result 243 states and 292 transitions. [2021-12-06 22:31:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 22:31:24,073 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 22:31:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:24,074 INFO L225 Difference]: With dead ends: 243 [2021-12-06 22:31:24,074 INFO L226 Difference]: Without dead ends: 243 [2021-12-06 22:31:24,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=209, Invalid=2044, Unknown=3, NotChecked=0, Total=2256 [2021-12-06 22:31:24,075 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 154 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:24,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 674 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:31:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-06 22:31:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 221. [2021-12-06 22:31:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 198 states have (on average 1.3636363636363635) internal successors, (270), 220 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 270 transitions. [2021-12-06 22:31:24,079 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 270 transitions. Word has length 33 [2021-12-06 22:31:24,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:24,079 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 270 transitions. [2021-12-06 22:31:24,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 270 transitions. [2021-12-06 22:31:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:31:24,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:24,079 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:24,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:31:24,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 22:31:24,281 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1732885686, now seen corresponding path program 3 times [2021-12-06 22:31:24,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:31:24,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469558945] [2021-12-06 22:31:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:24,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:31:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:24,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:31:24,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469558945] [2021-12-06 22:31:24,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469558945] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:31:24,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353554448] [2021-12-06 22:31:24,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:31:24,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:31:24,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:31:24,455 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:31:24,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:31:24,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:31:24,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:31:24,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 22:31:24,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:24,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:24,598 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:31:24,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:31:24,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:24,691 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:31:24,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-12-06 22:31:24,701 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:31:24,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-12-06 22:31:24,719 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:31:24,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:31:24,745 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 22:31:24,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-06 22:31:24,837 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-06 22:31:24,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-12-06 22:31:24,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-12-06 22:31:24,892 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-06 22:31:24,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 56 [2021-12-06 22:31:24,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-06 22:31:24,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:31:24,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-06 22:31:24,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079914692] [2021-12-06 22:31:24,895 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 22:31:24,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 22:31:24,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:24,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 22:31:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:31:24,896 INFO L87 Difference]: Start difference. First operand 221 states and 270 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:31:24,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:31:24,896 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:24,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:31:24,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:31:25,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 22:31:25,099 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@57f825ab at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-06 22:31:25,107 INFO L158 Benchmark]: Toolchain (without parser) took 79849.30ms. Allocated memory was 88.1MB in the beginning and 935.3MB in the end (delta: 847.2MB). Free memory was 52.7MB in the beginning and 825.5MB in the end (delta: -772.8MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2021-12-06 22:31:25,108 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 88.1MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:31:25,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.97ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.4MB in the beginning and 75.5MB in the end (delta: -23.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:31:25,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.64ms. Allocated memory is still 107.0MB. Free memory was 75.5MB in the beginning and 73.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:31:25,110 INFO L158 Benchmark]: Boogie Preprocessor took 26.49ms. Allocated memory is still 107.0MB. Free memory was 73.4MB in the beginning and 71.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:31:25,111 INFO L158 Benchmark]: RCFGBuilder took 356.31ms. Allocated memory is still 107.0MB. Free memory was 71.3MB in the beginning and 51.8MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 22:31:25,112 INFO L158 Benchmark]: TraceAbstraction took 79116.63ms. Allocated memory was 107.0MB in the beginning and 935.3MB in the end (delta: 828.4MB). Free memory was 51.1MB in the beginning and 825.5MB in the end (delta: -774.4MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2021-12-06 22:31:25,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 88.1MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.97ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.4MB in the beginning and 75.5MB in the end (delta: -23.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.64ms. Allocated memory is still 107.0MB. Free memory was 75.5MB in the beginning and 73.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.49ms. Allocated memory is still 107.0MB. Free memory was 73.4MB in the beginning and 71.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 356.31ms. Allocated memory is still 107.0MB. Free memory was 71.3MB in the beginning and 51.8MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 79116.63ms. Allocated memory was 107.0MB in the beginning and 935.3MB in the end (delta: 828.4MB). Free memory was 51.1MB in the beginning and 825.5MB in the end (delta: -774.4MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@57f825ab de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@57f825ab: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-06 22:31:25,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:31:26,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:31:26,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:31:26,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:31:26,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:31:26,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:31:26,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:31:26,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:31:26,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:31:26,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:31:26,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:31:26,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:31:26,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:31:26,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:31:26,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:31:26,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:31:26,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:31:26,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:31:26,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:31:26,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:31:26,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:31:26,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:31:26,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:31:26,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:31:26,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:31:26,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:31:26,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:31:26,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:31:26,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:31:26,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:31:26,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:31:26,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:31:26,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:31:26,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:31:26,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:31:26,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:31:26,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:31:26,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:31:26,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:31:26,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:31:26,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:31:26,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 22:31:26,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:31:26,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:31:26,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:31:26,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:31:26,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:31:26,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:31:26,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:31:26,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:31:26,788 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:31:26,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:31:26,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:31:26,788 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:31:26,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:31:26,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:31:26,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:31:26,789 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:31:26,789 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:31:26,790 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:31:26,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:31:26,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:31:26,790 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 22:31:26,790 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 22:31:26,791 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:31:26,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:31:26,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:31:26,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:31:26,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:31:26,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:31:26,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:31:26,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:31:26,792 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 22:31:26,792 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 22:31:26,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:31:26,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 22:31:26,793 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba [2021-12-06 22:31:27,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:31:27,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:31:27,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:31:27,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:31:27,046 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:31:27,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2021-12-06 22:31:27,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/9a123e8fb/839890aa382146cd894227a6d90f6efc/FLAG2e6a4af6a [2021-12-06 22:31:27,521 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:31:27,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2021-12-06 22:31:27,531 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/9a123e8fb/839890aa382146cd894227a6d90f6efc/FLAG2e6a4af6a [2021-12-06 22:31:27,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/data/9a123e8fb/839890aa382146cd894227a6d90f6efc [2021-12-06 22:31:27,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:31:27,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:31:27,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:31:27,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:31:27,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:31:27,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a154467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27, skipping insertion in model container [2021-12-06 22:31:27,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:31:27,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:31:27,785 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2021-12-06 22:31:27,787 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2021-12-06 22:31:27,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2021-12-06 22:31:27,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:31:27,805 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:31:27,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2021-12-06 22:31:27,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2021-12-06 22:31:27,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2021-12-06 22:31:27,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:31:27,860 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:31:27,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27 WrapperNode [2021-12-06 22:31:27,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:31:27,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:31:27,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:31:27,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:31:27,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,898 INFO L137 Inliner]: procedures = 122, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 133 [2021-12-06 22:31:27,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:31:27,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:31:27,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:31:27,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:31:27,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:31:27,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:31:27,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:31:27,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:31:27,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (1/1) ... [2021-12-06 22:31:27,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:31:27,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:31:27,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:31:27,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:31:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 22:31:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:31:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:31:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:31:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:31:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:31:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 22:31:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 22:31:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:31:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:31:28,078 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:31:28,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:31:28,540 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:31:28,548 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:31:28,548 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-06 22:31:28,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:31:28 BoogieIcfgContainer [2021-12-06 22:31:28,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:31:28,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:31:28,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:31:28,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:31:28,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:31:27" (1/3) ... [2021-12-06 22:31:28,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b59ea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:31:28, skipping insertion in model container [2021-12-06 22:31:28,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:31:27" (2/3) ... [2021-12-06 22:31:28,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b59ea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:31:28, skipping insertion in model container [2021-12-06 22:31:28,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:31:28" (3/3) ... [2021-12-06 22:31:28,558 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2021-12-06 22:31:28,563 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:31:28,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2021-12-06 22:31:28,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:31:28,603 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:31:28,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2021-12-06 22:31:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 68 states have (on average 2.161764705882353) internal successors, (147), 125 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 22:31:28,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:28,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 22:31:28,621 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:28,625 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-06 22:31:28,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:28,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424652213] [2021-12-06 22:31:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:28,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:28,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:28,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:28,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 22:31:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:28,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:31:28,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:28,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:28,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:28,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:28,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424652213] [2021-12-06 22:31:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424652213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:28,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:28,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:31:28,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604711683] [2021-12-06 22:31:28,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:28,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:31:28,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:31:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:31:28,783 INFO L87 Difference]: Start difference. First operand has 126 states, 68 states have (on average 2.161764705882353) internal successors, (147), 125 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:28,985 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2021-12-06 22:31:28,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:31:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-06 22:31:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:28,997 INFO L225 Difference]: With dead ends: 124 [2021-12-06 22:31:28,997 INFO L226 Difference]: Without dead ends: 122 [2021-12-06 22:31:28,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:31:29,002 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 77 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:29,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 117 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:31:29,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-06 22:31:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-12-06 22:31:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 121 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-12-06 22:31:29,043 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 3 [2021-12-06 22:31:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:29,043 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-12-06 22:31:29,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-12-06 22:31:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 22:31:29,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:29,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 22:31:29,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:31:29,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:29,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:29,248 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-06 22:31:29,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956065062] [2021-12-06 22:31:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:29,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:29,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:29,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:29,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 22:31:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:29,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:31:29,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:29,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:29,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:29,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:29,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956065062] [2021-12-06 22:31:29,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956065062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:29,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:29,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:31:29,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031158590] [2021-12-06 22:31:29,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:29,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:31:29,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:31:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:31:29,437 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:29,693 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2021-12-06 22:31:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:31:29,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-06 22:31:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:29,695 INFO L225 Difference]: With dead ends: 120 [2021-12-06 22:31:29,695 INFO L226 Difference]: Without dead ends: 120 [2021-12-06 22:31:29,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:31:29,696 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 75 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:29,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 113 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:31:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-06 22:31:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-06 22:31:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.8955223880597014) internal successors, (127), 119 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2021-12-06 22:31:29,704 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 3 [2021-12-06 22:31:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:29,705 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2021-12-06 22:31:29,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2021-12-06 22:31:29,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 22:31:29,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:29,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:29,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 22:31:29,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:29,907 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027173, now seen corresponding path program 1 times [2021-12-06 22:31:29,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:29,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306489546] [2021-12-06 22:31:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:29,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:29,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:29,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 22:31:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:29,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:31:29,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:30,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:30,037 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:31:30,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-12-06 22:31:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:30,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:30,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:30,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306489546] [2021-12-06 22:31:30,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306489546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:30,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:30,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:31:30,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313921944] [2021-12-06 22:31:30,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:30,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:31:30,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:31:30,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:31:30,056 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:30,313 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2021-12-06 22:31:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:31:30,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 22:31:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:30,314 INFO L225 Difference]: With dead ends: 114 [2021-12-06 22:31:30,314 INFO L226 Difference]: Without dead ends: 114 [2021-12-06 22:31:30,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:31:30,316 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:30,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 82 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:31:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-06 22:31:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2021-12-06 22:31:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 71 states have (on average 1.704225352112676) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-12-06 22:31:30,322 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 7 [2021-12-06 22:31:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:30,323 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-12-06 22:31:30,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-12-06 22:31:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 22:31:30,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:30,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:30,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 22:31:30,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:30,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:30,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027174, now seen corresponding path program 1 times [2021-12-06 22:31:30,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:30,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829364770] [2021-12-06 22:31:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:30,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:30,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:30,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:30,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 22:31:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:30,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:31:30,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:30,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:30,696 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:31:30,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 22:31:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:30,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:30,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:30,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829364770] [2021-12-06 22:31:30,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829364770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:30,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:30,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:31:30,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220235691] [2021-12-06 22:31:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:30,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:31:30,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:31:30,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:31:30,711 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:31,072 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2021-12-06 22:31:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:31:31,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 22:31:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:31,073 INFO L225 Difference]: With dead ends: 144 [2021-12-06 22:31:31,073 INFO L226 Difference]: Without dead ends: 144 [2021-12-06 22:31:31,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:31:31,074 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 129 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:31,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 121 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:31:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-06 22:31:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 129. [2021-12-06 22:31:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.5888888888888888) internal successors, (143), 128 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2021-12-06 22:31:31,083 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 7 [2021-12-06 22:31:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:31,083 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2021-12-06 22:31:31,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2021-12-06 22:31:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:31:31,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:31,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:31,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 22:31:31,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:31,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash 365768031, now seen corresponding path program 1 times [2021-12-06 22:31:31,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:31,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460181968] [2021-12-06 22:31:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:31,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:31,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:31,292 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:31,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 22:31:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:31,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:31:31,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:31,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:31,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:31,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460181968] [2021-12-06 22:31:31,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460181968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:31,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:31,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:31:31,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720919360] [2021-12-06 22:31:31,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:31,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:31:31,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:31:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:31:31,392 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:31,609 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2021-12-06 22:31:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:31:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 22:31:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:31,610 INFO L225 Difference]: With dead ends: 139 [2021-12-06 22:31:31,610 INFO L226 Difference]: Without dead ends: 139 [2021-12-06 22:31:31,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:31:31,611 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 120 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:31,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 171 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:31:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-06 22:31:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 129. [2021-12-06 22:31:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 128 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-12-06 22:31:31,618 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 11 [2021-12-06 22:31:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:31,618 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-12-06 22:31:31,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-12-06 22:31:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:31:31,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:31,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:31,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:31:31,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:31,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:31,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:31,822 INFO L85 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2021-12-06 22:31:31,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:31,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068312860] [2021-12-06 22:31:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:31,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:31,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:31,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:31,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 22:31:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:31,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:31:31,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:31,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:31,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:31,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-12-06 22:31:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:31,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:31,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:31,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068312860] [2021-12-06 22:31:31,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068312860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:31,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:31,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:31:31,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708642023] [2021-12-06 22:31:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:31,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:31:31,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:31:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:31:31,936 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:32,382 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2021-12-06 22:31:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:31:32,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 22:31:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:32,383 INFO L225 Difference]: With dead ends: 130 [2021-12-06 22:31:32,383 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 22:31:32,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:31:32,384 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 67 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:32,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 209 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:31:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 22:31:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2021-12-06 22:31:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-12-06 22:31:32,390 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 11 [2021-12-06 22:31:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:32,390 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-12-06 22:31:32,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:32,390 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-12-06 22:31:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:31:32,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:32,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:32,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 22:31:32,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:32,592 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:32,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2021-12-06 22:31:32,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:32,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847260683] [2021-12-06 22:31:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:32,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:32,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:32,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 22:31:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:32,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:31:32,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:32,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:32,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:32,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:32,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-06 22:31:32,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:31:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:32,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:32,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847260683] [2021-12-06 22:31:32,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847260683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:32,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:32,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:31:32,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746474278] [2021-12-06 22:31:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:32,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:31:32,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:31:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:31:32,748 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:33,285 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-12-06 22:31:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:31:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 22:31:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:33,286 INFO L225 Difference]: With dead ends: 126 [2021-12-06 22:31:33,286 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 22:31:33,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:31:33,287 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 8 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:33,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 292 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:31:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 22:31:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2021-12-06 22:31:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 119 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2021-12-06 22:31:33,291 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 11 [2021-12-06 22:31:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:33,291 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2021-12-06 22:31:33,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2021-12-06 22:31:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 22:31:33,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:33,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:33,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-06 22:31:33,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:33,493 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash 267350789, now seen corresponding path program 1 times [2021-12-06 22:31:33,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:33,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25011994] [2021-12-06 22:31:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:33,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:33,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:33,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:33,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 22:31:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:33,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 22:31:33,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:33,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:33,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:33,585 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 22:31:33,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:31:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:33,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:31:33,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:31:33,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:31:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:33,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:33,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:33,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25011994] [2021-12-06 22:31:33,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25011994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:33,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:33,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:31:33,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573989264] [2021-12-06 22:31:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:33,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:31:33,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:31:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:31:33,649 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:33,964 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2021-12-06 22:31:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:31:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 22:31:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:33,965 INFO L225 Difference]: With dead ends: 136 [2021-12-06 22:31:33,966 INFO L226 Difference]: Without dead ends: 136 [2021-12-06 22:31:33,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:31:33,966 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 18 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:33,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 294 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:31:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-06 22:31:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2021-12-06 22:31:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.5) internal successors, (135), 123 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-12-06 22:31:33,970 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 14 [2021-12-06 22:31:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:33,970 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-12-06 22:31:33,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-12-06 22:31:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:31:33,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:33,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:33,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 22:31:34,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:34,172 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 570721940, now seen corresponding path program 1 times [2021-12-06 22:31:34,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:34,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735775564] [2021-12-06 22:31:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:34,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:34,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:34,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 22:31:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:34,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 22:31:34,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:34,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:34,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:34,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:34,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:31:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:34,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:31:34,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:34,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:31:34,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:34,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:31:34,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:31:34,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:31:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:34,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:34,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:34,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735775564] [2021-12-06 22:31:34,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735775564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:34,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:34,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:31:34,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913787137] [2021-12-06 22:31:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:34,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:31:34,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:31:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:31:34,377 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:34,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:34,722 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2021-12-06 22:31:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:31:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 22:31:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:34,724 INFO L225 Difference]: With dead ends: 135 [2021-12-06 22:31:34,724 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 22:31:34,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:31:34,725 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 77 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:34,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 351 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:31:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 22:31:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2021-12-06 22:31:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.4736842105263157) internal successors, (140), 128 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-12-06 22:31:34,730 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 16 [2021-12-06 22:31:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:34,730 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-12-06 22:31:34,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-12-06 22:31:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:31:34,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:34,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:34,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 22:31:34,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:34,933 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:34,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:34,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1871456153, now seen corresponding path program 1 times [2021-12-06 22:31:34,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:34,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315084319] [2021-12-06 22:31:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:34,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:34,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:34,938 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:34,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 22:31:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:35,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:31:35,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:35,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:35,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:35,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-12-06 22:31:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:35,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:35,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:35,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315084319] [2021-12-06 22:31:35,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315084319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:35,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:35,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:31:35,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820077001] [2021-12-06 22:31:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:35,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:31:35,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:31:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:31:35,124 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:35,585 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2021-12-06 22:31:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:31:35,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 22:31:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:35,586 INFO L225 Difference]: With dead ends: 130 [2021-12-06 22:31:35,586 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 22:31:35,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:31:35,587 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 64 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:35,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 206 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:31:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 22:31:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2021-12-06 22:31:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 95 states have (on average 1.4631578947368422) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-12-06 22:31:35,591 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 19 [2021-12-06 22:31:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:35,591 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-12-06 22:31:35,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-12-06 22:31:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:31:35,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:35,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:35,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-06 22:31:35,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:35,794 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1871456152, now seen corresponding path program 1 times [2021-12-06 22:31:35,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:35,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045323627] [2021-12-06 22:31:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:35,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:35,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:35,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:35,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 22:31:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:35,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:31:35,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:35,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:35,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:35,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:35,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-06 22:31:35,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:31:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:35,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:35,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:35,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045323627] [2021-12-06 22:31:35,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045323627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:35,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:35,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:31:35,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846297537] [2021-12-06 22:31:35,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:35,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:31:35,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:31:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:31:35,940 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:36,375 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2021-12-06 22:31:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:31:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 22:31:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:36,377 INFO L225 Difference]: With dead ends: 127 [2021-12-06 22:31:36,377 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 22:31:36,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:31:36,377 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 6 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:36,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 276 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:31:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 22:31:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-12-06 22:31:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 95 states have (on average 1.4421052631578948) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-12-06 22:31:36,380 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 19 [2021-12-06 22:31:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:36,380 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-12-06 22:31:36,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-12-06 22:31:36,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 22:31:36,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:36,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:36,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 22:31:36,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:36,582 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1498994128, now seen corresponding path program 1 times [2021-12-06 22:31:36,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:36,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744766892] [2021-12-06 22:31:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:36,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:36,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:36,588 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:36,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 22:31:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:36,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 22:31:36,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:36,762 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 22:31:36,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 21 [2021-12-06 22:31:36,859 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-06 22:31:36,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 50 [2021-12-06 22:31:36,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:37,258 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:31:37,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2021-12-06 22:31:37,342 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:31:37,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2021-12-06 22:31:37,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2021-12-06 22:31:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:37,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:31:38,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:38,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-12-06 22:31:38,251 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:38,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 63 [2021-12-06 22:31:38,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-12-06 22:31:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:54,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:54,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744766892] [2021-12-06 22:31:54,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744766892] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:31:54,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:31:54,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-12-06 22:31:54,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982936236] [2021-12-06 22:31:54,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:31:54,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 22:31:54,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:54,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 22:31:54,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=415, Unknown=12, NotChecked=0, Total=506 [2021-12-06 22:31:54,359 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:55,405 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-12-06 22:31:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:31:55,405 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 22:31:55,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:55,406 INFO L225 Difference]: With dead ends: 167 [2021-12-06 22:31:55,406 INFO L226 Difference]: Without dead ends: 167 [2021-12-06 22:31:55,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=239, Invalid=871, Unknown=12, NotChecked=0, Total=1122 [2021-12-06 22:31:55,407 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 330 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 696 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:55,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 598 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 215 Invalid, 0 Unknown, 696 Unchecked, 0.4s Time] [2021-12-06 22:31:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-06 22:31:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 141. [2021-12-06 22:31:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 110 states have (on average 1.4090909090909092) internal successors, (155), 140 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2021-12-06 22:31:55,410 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 21 [2021-12-06 22:31:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:55,410 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2021-12-06 22:31:55,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:31:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2021-12-06 22:31:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 22:31:55,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:55,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:55,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-06 22:31:55,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:31:55,612 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:31:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1498994129, now seen corresponding path program 1 times [2021-12-06 22:31:55,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:31:55,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274186975] [2021-12-06 22:31:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:55,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:31:55,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:31:55,617 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:31:55,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 22:31:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:55,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 22:31:55,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:55,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:55,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:55,805 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:31:55,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 22:31:55,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:55,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:31:55,946 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:31:55,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:31:55,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:31:55,967 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:31:55,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:31:56,005 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:31:56,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-06 22:31:56,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 22:31:56,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:31:56,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:31:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:56,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:31:56,503 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_309 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_310 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_309 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_310) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-12-06 22:31:56,545 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_310 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_309 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_310) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_309 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2021-12-06 22:31:56,573 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_310 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_309 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_309) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_310) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_309 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_309) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))) is different from false [2021-12-06 22:31:56,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 28 [2021-12-06 22:31:56,618 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2021-12-06 22:31:56,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 22:31:56,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-06 22:31:56,692 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-06 22:31:56,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:56,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-12-06 22:31:56,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:56,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-12-06 22:31:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:56,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:31:56,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274186975] [2021-12-06 22:31:56,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274186975] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:31:56,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:31:56,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 22:31:56,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166375275] [2021-12-06 22:31:56,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:31:56,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 22:31:56,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:31:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 22:31:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=292, Unknown=3, NotChecked=108, Total=462 [2021-12-06 22:31:56,900 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:00,333 INFO L93 Difference]: Finished difference Result 236 states and 256 transitions. [2021-12-06 22:32:00,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:32:00,334 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 22:32:00,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:00,335 INFO L225 Difference]: With dead ends: 236 [2021-12-06 22:32:00,335 INFO L226 Difference]: Without dead ends: 236 [2021-12-06 22:32:00,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=798, Unknown=3, NotChecked=186, Total=1190 [2021-12-06 22:32:00,336 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 403 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 524 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:00,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 646 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1057 Invalid, 0 Unknown, 524 Unchecked, 2.5s Time] [2021-12-06 22:32:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-06 22:32:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 137. [2021-12-06 22:32:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 136 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2021-12-06 22:32:00,339 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 21 [2021-12-06 22:32:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:00,340 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2021-12-06 22:32:00,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2021-12-06 22:32:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 22:32:00,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:00,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:00,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 22:32:00,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:32:00,542 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:32:00,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:00,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1231002977, now seen corresponding path program 1 times [2021-12-06 22:32:00,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:32:00,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106578025] [2021-12-06 22:32:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:00,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:32:00,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:32:00,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:32:00,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 22:32:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:00,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 22:32:00,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:00,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:00,718 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 22:32:00,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 22:32:00,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:32:00,851 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:32:00,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 40 [2021-12-06 22:32:00,881 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:32:00,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2021-12-06 22:32:00,965 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 22:32:00,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 40 [2021-12-06 22:32:00,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-12-06 22:32:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:01,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:01,138 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_356) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))))) is different from false [2021-12-06 22:32:01,148 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:01,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 22:32:01,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:01,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2021-12-06 22:32:01,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-12-06 22:32:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:14,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:32:14,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106578025] [2021-12-06 22:32:14,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106578025] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:32:14,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:32:14,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-12-06 22:32:14,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289134787] [2021-12-06 22:32:14,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:32:14,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 22:32:14,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:32:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:32:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=271, Unknown=6, NotChecked=34, Total=380 [2021-12-06 22:32:14,281 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:15,283 INFO L93 Difference]: Finished difference Result 187 states and 208 transitions. [2021-12-06 22:32:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:32:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-06 22:32:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:15,284 INFO L225 Difference]: With dead ends: 187 [2021-12-06 22:32:15,284 INFO L226 Difference]: Without dead ends: 187 [2021-12-06 22:32:15,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=123, Invalid=427, Unknown=6, NotChecked=44, Total=600 [2021-12-06 22:32:15,285 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 171 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 506 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:15,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 498 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 442 Invalid, 0 Unknown, 506 Unchecked, 0.8s Time] [2021-12-06 22:32:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-06 22:32:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 144. [2021-12-06 22:32:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 143 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 164 transitions. [2021-12-06 22:32:15,288 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 164 transitions. Word has length 23 [2021-12-06 22:32:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:15,288 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 164 transitions. [2021-12-06 22:32:15,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 164 transitions. [2021-12-06 22:32:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 22:32:15,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:15,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:15,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 22:32:15,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:32:15,490 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:32:15,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1231002976, now seen corresponding path program 1 times [2021-12-06 22:32:15,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:32:15,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274333309] [2021-12-06 22:32:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:15,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:32:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:32:15,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:32:15,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 22:32:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:15,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 22:32:15,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:15,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:15,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:15,675 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:32:15,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 22:32:15,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:32:15,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:32:15,810 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:32:15,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:32:15,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 22:32:15,829 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:32:15,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 22:32:15,862 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:32:15,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-06 22:32:15,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 22:32:15,944 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 22:32:15,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:32:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-06 22:32:15,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 22:32:15,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:32:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:15,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:16,325 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_408 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_408) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_408 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_408) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_407) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-12-06 22:32:16,359 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_408 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_408) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_408 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_408) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_407) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-12-06 22:32:16,391 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_408 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_408) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_407) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_408 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_408) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2021-12-06 22:32:16,419 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-06 22:32:16,426 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-06 22:32:16,442 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2021-12-06 22:32:16,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 81 [2021-12-06 22:32:16,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-06 22:32:16,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2021-12-06 22:32:16,941 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-12-06 22:32:16,955 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-12-06 22:32:16,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 22:32:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:17,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:32:17,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274333309] [2021-12-06 22:32:17,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274333309] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:32:17,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:32:17,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-12-06 22:32:17,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254628295] [2021-12-06 22:32:17,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:32:17,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:32:17,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:32:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:32:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=199, Unknown=3, NotChecked=90, Total=342 [2021-12-06 22:32:17,355 INFO L87 Difference]: Start difference. First operand 144 states and 164 transitions. Second operand has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:19,595 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2021-12-06 22:32:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:32:19,595 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-06 22:32:19,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:19,596 INFO L225 Difference]: With dead ends: 205 [2021-12-06 22:32:19,596 INFO L226 Difference]: Without dead ends: 205 [2021-12-06 22:32:19,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=131, Invalid=430, Unknown=3, NotChecked=138, Total=702 [2021-12-06 22:32:19,597 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 141 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 532 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:19,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 559 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 693 Invalid, 0 Unknown, 532 Unchecked, 1.6s Time] [2021-12-06 22:32:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-06 22:32:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 144. [2021-12-06 22:32:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 118 states have (on average 1.38135593220339) internal successors, (163), 143 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 163 transitions. [2021-12-06 22:32:19,600 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 163 transitions. Word has length 23 [2021-12-06 22:32:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:19,600 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 163 transitions. [2021-12-06 22:32:19,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 163 transitions. [2021-12-06 22:32:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 22:32:19,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:19,601 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:19,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-06 22:32:19,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:32:19,802 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:32:19,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1759108802, now seen corresponding path program 1 times [2021-12-06 22:32:19,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:32:19,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106251527] [2021-12-06 22:32:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:19,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:32:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:32:19,807 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:32:19,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 22:32:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:19,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:32:19,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:19,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 22:32:19,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-06 22:32:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:32:19,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:32:19,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:32:19,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106251527] [2021-12-06 22:32:19,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106251527] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:32:19,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:32:19,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-12-06 22:32:19,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423947260] [2021-12-06 22:32:19,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:32:20,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:32:20,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:32:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:32:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:32:20,000 INFO L87 Difference]: Start difference. First operand 144 states and 163 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:20,376 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-12-06 22:32:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:32:20,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 22:32:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:20,378 INFO L225 Difference]: With dead ends: 143 [2021-12-06 22:32:20,378 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 22:32:20,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:32:20,378 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 54 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:20,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 208 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:32:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 22:32:20,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 136. [2021-12-06 22:32:20,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 112 states have (on average 1.3660714285714286) internal successors, (153), 135 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2021-12-06 22:32:20,381 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 24 [2021-12-06 22:32:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:20,382 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2021-12-06 22:32:20,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:32:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2021-12-06 22:32:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:32:20,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:20,382 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:20,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 22:32:20,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:32:20,585 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-06 22:32:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1576656190, now seen corresponding path program 2 times [2021-12-06 22:32:20,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:32:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091884284] [2021-12-06 22:32:20,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:32:20,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:32:20,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:32:20,592 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:32:20,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 22:32:20,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:32:20,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:32:20,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 22:32:20,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:20,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:20,726 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:32:20,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 22:32:20,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:32:20,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:20,835 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-06 22:32:20,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2021-12-06 22:32:20,854 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 22:32:20,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-06 22:32:20,928 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-12-06 22:32:20,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 70 [2021-12-06 22:32:20,942 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-06 22:32:20,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 22:32:21,169 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 22:32:21,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2021-12-06 22:32:21,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2021-12-06 22:32:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:21,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:42,505 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:42,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 14745 treesize of output 13701 [2021-12-06 22:32:43,083 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:43,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22065 treesize of output 21593 [2021-12-06 22:32:43,225 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:43,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28221 treesize of output 23125 [2021-12-06 22:32:43,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:32:43,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091884284] [2021-12-06 22:32:43,409 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 22:32:43,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255540945] [2021-12-06 22:32:43,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:32:43,410 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:32:43,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:32:43,410 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:32:43,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-12-06 22:32:43,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:32:43,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723984175] [2021-12-06 22:32:43,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:32:43,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:32:43,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 1 [2021-12-06 22:32:43,532 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:32:43,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 22:32:43,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:32:43,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:32:43,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 22:32:43,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:43,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:43,755 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:32:43,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 22:32:43,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:32:43,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:32:44,056 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 22:32:44,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-06 22:32:44,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:44,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-12-06 22:32:44,147 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:32:44,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2021-12-06 22:32:44,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-06 22:32:44,636 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-06 22:32:44,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 35 [2021-12-06 22:32:44,645 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:32:44,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:32:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:44,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:51,186 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:51,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 6388 treesize of output 5904 [2021-12-06 22:32:51,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11511 treesize of output 11319 [2021-12-06 22:32:51,703 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 22:32:51,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:32:51,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-06 22:32:51,703 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-12-06 22:32:51,703 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-06 22:32:51,708 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (56 of 57 remaining) [2021-12-06 22:32:51,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (55 of 57 remaining) [2021-12-06 22:32:51,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (54 of 57 remaining) [2021-12-06 22:32:51,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (53 of 57 remaining) [2021-12-06 22:32:51,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (52 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (51 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (50 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (49 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (48 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (47 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (46 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (45 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (44 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (43 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (42 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (41 of 57 remaining) [2021-12-06 22:32:51,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (40 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (39 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (38 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (37 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (36 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (35 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (34 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (33 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (32 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (31 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (30 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (29 of 57 remaining) [2021-12-06 22:32:51,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (28 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (27 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (26 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (25 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (24 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (23 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (22 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (21 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (20 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (19 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (18 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (17 of 57 remaining) [2021-12-06 22:32:51,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (16 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (15 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (14 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (13 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK (12 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (11 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (10 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (9 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION (8 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (7 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (6 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (5 of 57 remaining) [2021-12-06 22:32:51,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (4 of 57 remaining) [2021-12-06 22:32:51,714 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (3 of 57 remaining) [2021-12-06 22:32:51,714 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE (2 of 57 remaining) [2021-12-06 22:32:51,714 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE (1 of 57 remaining) [2021-12-06 22:32:51,714 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK (0 of 57 remaining) [2021-12-06 22:32:51,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 22:32:51,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-06 22:32:52,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:52,124 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:52,132 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:32:52,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:32:52 BoogieIcfgContainer [2021-12-06 22:32:52,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:32:52,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:32:52,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:32:52,149 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:32:52,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:31:28" (3/4) ... [2021-12-06 22:32:52,151 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 22:32:52,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:32:52,152 INFO L158 Benchmark]: Toolchain (without parser) took 84607.41ms. Allocated memory was 67.1MB in the beginning and 176.2MB in the end (delta: 109.1MB). Free memory was 46.2MB in the beginning and 143.8MB in the end (delta: -97.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2021-12-06 22:32:52,152 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:32:52,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.75ms. Allocated memory is still 67.1MB. Free memory was 46.1MB in the beginning and 42.8MB in the end (delta: 3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 22:32:52,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.93ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 40.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:32:52,153 INFO L158 Benchmark]: Boogie Preprocessor took 27.77ms. Allocated memory is still 67.1MB. Free memory was 40.6MB in the beginning and 38.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:32:52,153 INFO L158 Benchmark]: RCFGBuilder took 623.28ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 38.8MB in the beginning and 61.6MB in the end (delta: -22.8MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-12-06 22:32:52,153 INFO L158 Benchmark]: TraceAbstraction took 83596.00ms. Allocated memory was 94.4MB in the beginning and 176.2MB in the end (delta: 81.8MB). Free memory was 61.1MB in the beginning and 143.8MB in the end (delta: -82.7MB). Peak memory consumption was 93.0MB. Max. memory is 16.1GB. [2021-12-06 22:32:52,153 INFO L158 Benchmark]: Witness Printer took 2.61ms. Allocated memory is still 176.2MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:32:52,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.75ms. Allocated memory is still 67.1MB. Free memory was 46.1MB in the beginning and 42.8MB in the end (delta: 3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.93ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 40.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.77ms. Allocated memory is still 67.1MB. Free memory was 40.6MB in the beginning and 38.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.28ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 38.8MB in the beginning and 61.6MB in the end (delta: -22.8MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 83596.00ms. Allocated memory was 94.4MB in the beginning and 176.2MB in the end (delta: 81.8MB). Free memory was 61.1MB in the beginning and 143.8MB in the end (delta: -82.7MB). Peak memory consumption was 93.0MB. Max. memory is 16.1GB. * Witness Printer took 2.61ms. Allocated memory is still 176.2MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L995] SLL* head = malloc(sizeof(SLL)); [L996] head->next = ((void*)0) [L997] head->data = 0 [L999] SLL* x = head; [L1002] COND TRUE __VERIFIER_nondet_int() [L1002] x->next = malloc(sizeof(SLL)) [L1002] EXPR x->next [L1002] x = x->next [L1002] x->next = ((void*)0) [L1002] x->data = 0 [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1005] x = head [L1006] EXPR x->next [L1006] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1008] COND FALSE !(!(x != ((void*)0))) [L1009] EXPR x->next [L1009] x = x->next [L1006] EXPR x->next [L1006] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1008] COND FALSE !(!(x != ((void*)0))) [L1009] EXPR x->next [L1009] x = x->next [L1006] x->next - UnprovableResult [Line: 996]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 996]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 992]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 57 error locations. Started 1 CEGAR loops. OverallTime: 83.5s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1873 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1873 mSDsluCounter, 4741 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2258 IncrementalHoareTripleChecker+Unchecked, 3463 mSDsCounter, 324 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4457 IncrementalHoareTripleChecker+Invalid, 7039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 324 mSolverCounterUnsat, 1278 mSDtfsCounter, 4457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 206 SyntacticMatches, 18 SemanticMatches, 175 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 32.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=14, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 294 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 57.8s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 350 ConstructedInterpolants, 51 QuantifiedInterpolants, 6607 SizeOfPredicates, 102 NumberOfNonLiveVariables, 1619 ConjunctsInSsa, 241 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 11/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 22:32:52,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0baf2b8-bccd-4654-82ab-5744a46dc72e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN